18095995980 has 36 divisors (see below), whose sum is σ = 54891188352. Its totient is φ = 4825598880.

The previous prime is 18095995963. The next prime is 18095995987. The reversal of 18095995980 is 8959959081.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (18095995987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50266476 + ... + 50266835.

It is an arithmetic number, because the mean of its divisors is an integer number (1524755232).

Almost surely, 2^18095995980 is an apocalyptic number.

18095995980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18095995980 is an abundant number, since it is smaller than the sum of its proper divisors (36795192372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18095995980 is a wasteful number, since it uses less digits than its factorization.

18095995980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100533326 (or 100533321 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 63.

The spelling of 18095995980 in words is "eighteen billion, ninety-five million, nine hundred ninety-five thousand, nine hundred eighty".